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Figure 1: Solid horizontal arrow show Tuohy needle with catheter coming through transverse abdominis plane fascia (vertical down arrow) horizontal lined arrow show transversus abdominis, internal oblique, and external oblique muscles from top to bottom

Figure 1: Solid horizontal arrow show Tuohy needle with catheter coming through transverse abdominis plane fascia (vertical down arrow) horizontal lined arrow show transversus abdominis, internal oblique, and external oblique muscles from top to bottom